Boil pasta with salted water or stock until al-dente. Strain in a colander and run a cold water to get rid of excess starch. This prevents pasta from sticking together.

To prepare Dressing:

In a mixing bowl, put garlic, capers, lemon zest and onion. Squeeze in juice of half a lemon, add olive oil and mix thoroughly. Add in tomatoes and olives; mix further. Add the prepared pasta and toss thoroughly to mix the dressing. Sprinkle grated parmesan cheese on top and serve. Could be served at room temperature or chilled.